# RP vs Mantis

The clearest difference is rating: Mantis at 5.0 against RP's 3.9. RP's advantage is price ($5.99 vs $14.99) and update cadence (every 2 months vs every 9 months). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

RP costs $5.99 and Mantis $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Mantis holds the better App Store score, 5.0 against 3.9. Both are backed by a comparable volume of ratings — 15 and 8 respectively.

RP ships an update every 2 months, Mantis every 9 months. The most recent releases landed on August 26, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | RP | Mantis |
| --- | --- | --- |
| Price | **$5.99** | $14.99 |
| Rating | [3.9 (15 ratings)](https://appshunter.io/ios/app/rp-1-delay/id1079530569/reviews) | **[5.0 (8 ratings)](https://appshunter.io/ios/app/mantis-bbd-echo/id1673531514/reviews)** |
| Number of ratings | **15** | 8 |
| Positive reviews | 70.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 9 months |
| Monetization | Paid | Paid |
| Best chart rank | **#200** | — |
| Size | 13 MB | 10 MB |
| Requires iOS | **9.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kai Aras](https://appshunter.io/developer/370820899) | [AudioThing Ltd.](https://appshunter.io/developer/1659941236) |

## What reviewers say

### RP

[App page](https://appshunter.io/ios/app/rp-1-delay/id1079530569)

**Currently charting:** #200 Top Paid · Music (US App Store)

This app offers dual stereo delay lines for a vast array of audio effects, from simple echoes to complex soundscapes. It features individual bypass, modulation routing, and tempo synchronization options.

**Highlights:** Dual stereo delay lines, High- and Lowpass filters, Stereo spread and Looping, Separate modulation delay, Tempo sync via AudioUnit Host or Ableton Link, Delay times from 10ms to 2000ms

**Features:** Vision Pro support

**In-app purchases:** none


### Mantis

[App page](https://appshunter.io/ios/app/mantis-bbd-echo/id1673531514)

This audio plugin emulates a vintage 70s analog delay/echo unit, offering a warm, authentic sound. It features four echo taps, swell selectors, and a unique modulation section for chorus-like effects.

**Highlights:** Emulates rare 70s BBD delay/echo, Warm analog sound, Four echo taps, Four swell selectors, Rotafaze modulation section, Mimics tape echo wow/flutter, Chorus-delay effect

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is RP free?

RP costs $5.99, with no in-app purchases.

### Is Mantis free?

Mantis costs $14.99, with no in-app purchases.

### Which has better reviews, RP or Mantis?

Mantis is rated higher. RP averages 3.9 out of 5 from 15 ratings, while Mantis averages 5.0 from 8 ratings.

### Do RP or Mantis have ads?

Neither RP nor Mantis shows ads.

### Which is updated more often, RP or Mantis?

RP ships an update every 2 months, and Mantis every 9 months. Most recently, RP was updated on August 26, 2026 and Mantis on September 26, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*